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Temperature Dependence of Decay Time and Intensity of Alpha Pulses in Pure and Thallium-Activated Cesium Iodide

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.1717979· OSTI ID:4787706
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The intensity and decay time of Po210alpha particle scintillations produced in pure and thallium-activated cesium iodide have been measured with a fast electronic system as a function of temperature down to 77°K. Three modes of decay due to alpha excitation have been observed for CsI(Tl), and two for CsI. Other than the 7- and 0.55-μsec modes (at room temperature) reported in the literature for CsI(Tl), an additional temperature-independent mode of about 1.3 μsec has been detected between 77 and 150°K. Finally, in CsI a fast temperature-dependent mode of decay (≈100 nsec) was observed between 100–200°K in addition to the known principal mode.
Research Organization:
Geological Survey, Washington, D.C.
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-029578
OSTI ID:
4787706
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 33; ISSN 0034-6748; ISSN RSINAK
Publisher:
American Institute of Physics (AIP)
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ACTIVATION
ALPHA PARTICLES
CESIUM IODIDES
DECAY
ELECTRONIC EQUIPMENT
LOW TEMPERATURE
PHYSICS
POLONIUM 210
TEMPERATURE
THALLIUM